20230906_과제

[서승원]

1. img 파일 확인

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// 파일명을 입력받아서 그림 파일이 맞는지 여부를 출력하세요.         // 그림 파일의 확장자 : jpg , gif , png         // gif : 색상 216 표현          System.out.println("파일을 입력하세요");         boolean bImg = false;         String[] strImgCheck = {".jpg",".gif",".png"};                  String str = scanner.next();         //str = "sdf.jpag";                           for(String strImg : strImgCheck)             if( str.lastIndexOf(strImg) > 0  )                 bImg = true;                  if(bImg ==true)             System.out.println("그림 파일 O ");         else             System.out.println("그림 파일 X ");                       Colored by Color Scripter

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2. 핸드폰 번호 

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//해드폰 번호를 분리된 상태로 받아서          //(지역번호)1234-5678식으로 합쳐서 출력 후          //(지역번호)12345678형태로 분해 출력         String[] telarr = {"010","1234","5678"} ;         String tel ="";         for(String t : telarr) {             tel += t+"-";         }                  tel = tel.replace(telarr[0]+"-", "("+telarr[0]+")" );         System.out.println("번호 : "+tel.substring(0 , (tel.length()-1)));         System.out.print("번호 : "+tel.replace("-",""));   Colored by Color Scripter

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3.문장의 공백 개수 및 위치 확인 1

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//문장을 입력받아 문장안에 포함된 공백의 개수와 공백의 위치를 출력하시오                  String str0 = "0123456789_123456789-123456789=123456789";         //                        1234567 8901 234 56 7890 123 4567         String str = "2023년 9월은 추석이 포함되어 있는 달입니다.";         //                        01234567 89 0123 456789 012 345 67         //공백 : 5          int nCnt = 0;         int Check = -1;         int CheckPos = 0;         int CheckCnt = 0;         String strCheck = str;                  System.out.println(str);         System.out.println(str.length());         System.out.println();                  //1. 찾으면 줄려가면서 확인          while(true) {               strCheck = strCheck.substring( Check + 1 , strCheck.length()); //나의 위치부터 출력하기때문에 찾은 값보다 한칸 위를 찾는다.             Check = strCheck.indexOf(" "); //            System.out.println(strCheck); //            System.out.println(Check);             if( Check > 0) {                 CheckCnt++;                 //배열기준 위치는 실제보다 1작다                 //위치를 shift하면서 체크하기 때문에 중첩한다.                 CheckPos += Check +1;              }                          if( Check < 0 || nCnt > str.length())                 break;                          //System.out.println();             System.out.println( CheckCnt +"번째 위치 : " + CheckPos );                            nCnt++;         }                  System.out.println();         System.out.println("총개수 : " + CheckCnt );                  //출력 : 공백의 개수 , 공백의 위치          Colored by Color Scripter

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3.문장의 공백 개수 및 위치 확인 2

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//문장을 입력받아 문장안에 포함된 공백의 개수와 공백의 위치를 출력하시오           String str = "2023년 9월은 추석이 포함되어 있는 달입니다.";         //                        01234567 89 0123 456789 012 345 67                  System.out.println(str);         System.out.println(str.length());         System.out.println();                  String[] strArr1 = str.split(" ");               System.out.println("개수 : " + (strArr1.length-1));                  int nPos = 0;                  for(int i =0; i < strArr1.length - 1; i++) { //맨뒤는 없지만 배열에 들어간다.             System.out.println("  위치 : " + (nPos += strArr1[i].length()+1)); //배열이라 +1         }      Colored by Color Scripter

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4. 영어, 숫자 ,_ 만 사용 

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// 정규식 X          // 영문자와 숫자만 입력          // 아이디 : 영문자 , 숫자 , _ 허용               //System.out.println("id를 입력하세요 ");         //String str = scanner.next();                  String str ="zxcvbnmasdfghjklqwertyuiopZXCVBNMASDFGHJKLQWERTYUIOP0123456789_AZaz09_";         System.out.println("ID : " + str);         System.out.println();         boolean bCheck = true;                  System.out.print("A : " + (int)'A');         System.out.println(" ~ Z : " + (int)'Z');         System.out.print("a : " + (int)'a');         System.out.println(" ~ z : " + (int)'z');         System.out.print("0 : " + (int)'0');         System.out.println(" ~ 9 : " + (int)'9');         System.out.println("_ : " + (int)'_');                    System.out.println("---------------------------" );         System.out.println("- : " + (int)'-');         System.out.println("  " );         char ch1_Es = 'A';         char ch2_Ee = 'Z';         for(int i =0;i<str.length();i++) {             char chStar = str.charAt(i);                          //1. 범위에 들어오면 true 아니면 false  //            if(    ((int)'A' <= (int)chStar &&  (int)'Z' >= (int)chStar) ||  //                    ((int)'a' <= (int)chStar &&  (int)'z' >= (int)chStar) || //                    ((int)'0' <= (int)chStar &&  (int)'9' >= (int)chStar) || //                    (int)'_' == (int)chStar) { //                //System.out.println("1 : " +chStar +"("+(int)chStar+")"); //                bCheck =true; //            } //            else { //                System.out.println("2 : " +chStar +"("+(int)chStar+")"); //                bCheck =false; //                break; //            }                          //범위에 안들어오면 false truen             if(    ((int)'A' > (int)chStar ||  (int)'Z' < (int)chStar) &                      ((int)'a' > (int)chStar ||  (int)'z' < (int)chStar) &                     ((int)'0' > (int)chStar ||  (int)'9' < (int)chStar) &                     (int)'_' != (int)chStar) {                 System.out.println("사용불가 : " +chStar +" ("+(int)chStar+")");                 bCheck =false;                 break;             }                        }                  if(!bCheck) {             System.out.println("ID생성 실패");         }         else             System.out.println("ID생성 O"); Colored by Color Scripter

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5. 로또 번호 (중첩 제거 ) 

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// 중복배제시키기          // 임의의 난수 6개 발생 , 숫자6개 입력받아서 당첨 여부 확인하기          // 보너스 1개         // 45           // 1~ 45 로또          int[] Lotto = new int[6];         int[] Lottochoice = new int[6];         for(int i=0; i<Lotto.length;i++ ) {             Lotto[i] =    (int)(Math.random() * 45) +1;               //기존에 값이 존재하는지 확인               for(int j = 0 ; j <i; j++) {                 if(Lotto[j] == Lotto[i]) {                     i--; //존재하면 다시 진행                      break;                 }             }             }             int rand =    (int)(Math.random() * 45) +1;                         for(int i=0; i<Lottochoice.length;i++ ) {             System.out.println("로또 번호를 입력하세요 (1~45)");                 Lottochoice[i] = scanner.nextInt();             //Lottochoice[i] =    (int)(Math.random() * 45) +1;               if(Lottochoice[i] <= 0 || Lottochoice[i] > 45) {                 System.out.println("범위에 맞게 다시 입력하세요 (1~45)");                 i--;                 continue;             }                          //기존에 값이 존재하는지 확인               for(int j = 0 ; j <i; j++) {                 if(Lottochoice[j] == Lottochoice[i]) {                     System.out.println("같은 번호를 입력하셨습니다. 다른 번호를 선택해주세요");                     i--; //존재하면 다시 진행                      break;                 }             }             }                  int nCnt =0;         for(int i : Lotto) {             for(int j : Lottochoice) {                 if(i == j) {                     System.out.println("!!!");                     nCnt++;                 }             }         }                  System.out.println("로또 번호는 ");         for(int i : Lotto) {             System.out.print(i +" ");         }         System.out.println();         System.out.println("선택하신 번호는 ");         for(int i : Lottochoice) {             System.out.print(i +" ");         }         System.out.println();                             if(nCnt == 6){             System.out.println("축하드립니다. "+nCnt+"개가 맞았습니다.");             System.out.println("자동차에 당첨되셨습니다. ");         }         else if (nCnt == 5){             System.out.println("축하드립니다. "+nCnt+"개가 맞았습니다.");             System.out.println("냉장고에 당첨되셨습니다. ");         }         else if (nCnt == 4){             System.out.println("축하드립니다. "+nCnt+"개가 맞았습니다.");             System.out.println("컴퓨터에 당첨되셨습니다. ");         }         else if (nCnt == 3){             System.out.println("축하드립니다. "+nCnt+"개가 맞았습니다.");             System.out.println("무선마우스에 당첨되셨습니다. ");         }         else if (nCnt == 2){             System.out.println("축하드립니다. "+nCnt+"개가 맞았습니다.");             System.out.println("커피쿠폰에 당첨되셨습니다. ");         }         else{             System.out.println(nCnt+"개가 맞았습니다.");             System.out.println("다음 기회에...");         } Colored by Color Scripter

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[행복]

3번 배열에 넣어서 처리하니 많이 스탭이 줄었네요. 좋습니다.
다양한 알고리즘 처리 잘 보았어요. 수고하셨습니다.